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Yet another long water pump question...

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Old Jun 2, 2011 | 11:55 PM
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Default Yet another long water pump question...

I have searched a lot of posts on here and elswhere regarding Corvettes and water pumps and have found a lot of confusing info, but then again I am easily confused. My question is, can I use a long water pump on a 454 block going into a '68 Corvette, or will there be radiator interference? Thanks in advance ...(and I apologize for what must surely be a redundant question.)
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Old Jun 3, 2011 | 12:21 AM
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If you use a long legged pump when the installation calls for a short legged pump all of your pulleys will not align. Why not just go buy the correct pump?
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Old Jun 3, 2011 | 12:28 AM
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I didn't think that your question was all that long. Quite succinct in fact.
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Old Jun 3, 2011 | 01:40 AM
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the cross member in front of the harmonic balancer doesn't have clearance for the longer (deeper) pulley that would be required with the long-legged BBC water pump since the plane of the fan belt would be further forward.
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Old Jun 3, 2011 | 05:16 AM
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Originally Posted by Scott Marzahl
If you use a long legged pump when the installation calls for a short legged pump all of your pulleys will not align. Why not just go buy the correct pump?
The pulleys I have fit with the long pump. That is what I would like to avoid is replacing not only the pump but all the pulleys. (Water pumps are relatively cheap; deep groove GM pulleys ain't)
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Old Jun 3, 2011 | 05:30 AM
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My short answer for your long question is : no, don't do it.
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Old Jun 3, 2011 | 07:14 AM
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Originally Posted by 68/BB
The pulleys I have fit with the long pump. That is what I would like to avoid is replacing not only the pump but all the pulleys. (Water pumps are relatively cheap; deep groove GM pulleys ain't)
So the long pump crankshaft pulley you have doesn't hit the crossmember?
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Old Jun 3, 2011 | 04:00 PM
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Originally Posted by Mike Ward
I didn't think that your question was all that long. Quite succinct in fact.

LOL!!!


Scott
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Old Jun 3, 2011 | 04:48 PM
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The 454 is not in the Vette yet. It was built for a '72 Chevelle but not installed. Now the plan is to install it in the '68 Vette, so I need to find out if it will fit in without interference anywhere or will I need to change everything to short water pump configuration before I attempt it. Should have made that clearer I suppose. But then again I was going for 'succinct' which I apparently accomplished at least.
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Old Jun 3, 2011 | 11:28 PM
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long casting waterpumps are for trucks and passenger cars, not Corvettes...and dont make any difference if a BB or SB.....
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Old Jun 4, 2011 | 09:54 AM
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I've got a long pump set-up in mine, the cross member will need some work (cutting and welding).

Motor driven fan will not work either.

Neal
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Old Jun 4, 2011 | 12:21 PM
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Originally Posted by chevymans 77
I've got a long pump set-up in mine, the cross member will need some work (cutting and welding).

Motor driven fan will not work either.

Neal
Thanks for that info. I posted earlier on here that someone had told me that I would have to modify the crossmember if I installed a 454 because the harmonic balancer would hit it. I bet they had that confused with the pulley set up on a long water pump. In any case I would rather swap everything out for the short pump configuration than modify the frame. Sure wish the economy was better; it makes it hard to sell this stuff on Ebay. Couple years ago I could have listed those pulleys for good money. Now they won't bring squat. Thanks again.
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